AC66U: Merlin 380.62: OpenVPN client performance issue

[Pete]

I am on AC66U (Broadcom BCM5300 chip rev 1), Merlin 380.62. Configured OpenVPN client to connect to a VPN service provider.

The OpenVPN performance is slow and getting about 2 Mbps.

Windows client connects at about 25Mbps.

I am looking for options to get a decent performance.

Is there a few pointers to get a better VPN client performance?


Thanks.
Pete.

 

[Pete]

I am on AC66U (Broadcom BCM5300 chip rev 1), Merlin 380.62. Configured OpenVPN client to connect to a VPN service provider.

The OpenVPN performance is slow and getting about 2 Mbps.

Windows client connects at about 25Mbps.

I am looking for options to get a decent performance.

Is there a few pointers to get a better VPN client performance?


Thanks.
Pete.

Looks like I am the only one having this issue.

Do I have to trash this router and go for a different one?

 

[john9527]

Looks like I am the only one having this issue.

Do I have to trash this router and go for a different one?

For the single core MIPS based routers, you are pretty limited on VPN throughput (just not enough processor).

For AES-128-CBC and SHA1 auth, max on the MIPS routers is about 10-12 Mb/s. If you use AES-256-CBC and SHA256 that will be cut in half to about 5-6 Mb/s.

 

[swetoast]

Love it when users forget about the SoC in the router and expect too much of it

 

[Pete]

For the single core MIPS based routers, you are pretty limited on VPN throughput (just not enough processor).

For AES-128-CBC and SHA1 auth, max on the MIPS routers is about 10-12 Mb/s. If you use AES-256-CBC and SHA256 that will be cut in half to about 5-6 Mb/s.

Thanks. I get it . Looks like I expected too much from this compared to my old N13U-B1.

AES-256-CBC + comp-lzo may be an overkill for AC66U. May be AC68P an alternative?

 

[swetoast]

nope its not running that on my RT-AC56U so it runs just fine

 

[Pete]

nope its not running that on my RT-AC56U so it runs just fine

Do you suggest AC56U, AC68U or AC68P?

Thanks.

 

[swetoast]

Try with the AC66U first see how it performs think it will handle it just fine

 

[L&LD]

nope its not running that on my RT-AC56U so it runs just fine

The RT-AC56U has a dual core 800MHz processor and the RT-AC66U has a single core 600MHz processor. Not comparable at all for VPN performance.

Pete, if you have access to the RT-AC1900P from Best Buy, that would be the best bang for the buck right now (1.4GHz dual processors). Otherwise, any of the routers you list in post 7 will give similar performance in VPN usage.

 

[Pete]

Try with the AC66U first see how it performs think it will handle it just fine

This is the best I can get on a 30/30 Mbps line, closest server. Anything to servers in the USA is terribly slow. However, with the windows client the speed is about 25Mbps.

As I said earlier, I am already using AC66U.

 

[Pete]

Thanks everyone.

I will plan to upgrade my existing hardware when time permits.